added csv importer for timesheet and project data (#1216)

tests/Importer/InvalidFieldsExceptionTest.php

@@ -0,0 +1,26 @@
+<?php
+
+/*
+ * This file is part of the Kimai time-tracking app.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace App\Tests\Importer;
+
+use App\Importer\InvalidFieldsException;
+use PHPUnit\Framework\TestCase;
+
+/**
+ * @covers \App\Importer\InvalidFieldsException
+ */
+class InvalidFieldsExceptionTest extends TestCase
+{
+    public function testException()
+    {
+        $sut = new InvalidFieldsException(['test', 'foo']);
+        self::assertEquals(['test', 'foo'], $sut->getFields());
+        self::assertEquals('Missing fields: test, foo', $sut->getMessage());
+    }
+}